Glowlight Tetra care guide
Glowlight Tetra (Hemigrammus erythrozonus) — minimum tank 40 L, temperature 24-28 °C, pH 5.5-7.
Overview
The Glowlight Tetra (Hemigrammus erythrozonus) is a small characid native to the Essequibo basin in Guyana. It is recognised by a narrow, bright copper-red stripe extending from snout to tail base, producing a glowing effect under aquarium lighting.
Taxonomy
- Family: Characidae
- Genus: Hemigrammus
- Scientific name: Hemigrammus erythrozonus
Habitat
The species inhabits soft, slightly acidic blackwater tributaries of the Essequibo and Potaro river systems in Guyana, where waters are stained by tannins and shaded by overhanging vegetation.
Tank requirements
- Minimum tank volume: 40 L (10.6 US gal)
- Adult size: 3-4 cm
- Temperature: 24-28 °C (75-82 °F)
- pH: 5.5-7
- GH: 2-10 °dGH
- Water flow: low
- Lifespan: 3-5 years
- School size: ≥6 individuals
Diet
A micro-predator and omnivore consuming small invertebrates, insect larvae and plant debris. In captivity it accepts micro-pellets, fine flakes and small live or frozen foods such as daphnia, cyclops and baby brine shrimp.
Compatibility
A peaceful mid-water shoaling species. Maintain a group of at least six in a planted aquarium with subdued lighting. Suitable tankmates include other small characins, Corydoras, Otocinclus and dwarf rasboras. Avoid large or aggressive species.
Breeding
An egg-scatterer. Spawning is best induced in a separate tank with very soft, acidic water (pH 5.5-6.5, GH below 4), subdued lighting and fine-leaved plants or a spawning mop. Eggs hatch in about 24 hours; remove parents after spawning.
Conservation status
IUCN Red List: not formally assessed; populations appear stable and the species is extensively bred in captivity.